Exam 12: Business Statistics and Regression Analysis

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A(n)________ is a statistical graph that summarizes the distribution of data and how the data fits into defined bins.

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________ is the process of taking data from a sample of the population and making predictions about the entire population.

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The more random the sample,the more accurate the statistical analysis will be,in part,because randomness eliminates bias.

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If you leave the Bin Range box blank,Excel will generate bin values automatically.

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The R Square value is calculated by squaring the correlation coefficient,labeled as Squared R in the output.

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The spa manager uses data such as time between sales transactions,the weight of a package for shipping,and the amount of money a customer spends in any given visit.These are examples of ________.

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The Analysis ToolPak allows you to conduct a variety of statistical analyses with ease.

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Ratio data is similar to ordinal data except that the differences between the data can be quantified and proportions can be specified.

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Match the following terms with their description.
Ordinal data
Often used to categorize responses in a survey
Data set
Collection of related data
Ratio Data
Rank data as first,second,third,and so on
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Responses:
Ordinal data
Often used to categorize responses in a survey
Data set
Collection of related data
Ratio Data
Rank data as first,second,third,and so on
Nominal data
Differences between the data can be quantified and proportions can be specified
Interval data
Measures the size of the difference between values
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The spa calculates the total revenue that a spa package generates over the course of a year.This is an example of ________.

(Multiple Choice)
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A ________ calculates the average of values over time based on specified intervals.

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A(n)________ describes all the possible values and likelihoods that a given variable can be within a specific range,and they can be in the form of a graph,table,or formula.

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All of the following statements are TRUE about basic statistical methods to business EXCEPT:

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________ variables are often used to categorize responses in a survey.

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All of the following statements are TRUE regarding variance EXCEPT:

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________ are only useful with discrete data that is sorted in either ascending or descending order.

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All of the following statements are TRUE regarding probability distribution EXCEPT:

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Calculating the range,variance,and standard deviation of a data set are all methods used to determine the ________ of a data set.

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To calculate the mean in Excel,the AVERAGE function is used.

(True/False)
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________ data are useful in situations where it is difficult to obtain accurate measurements.

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